package com.sky.controller.user;


import com.sky.constant.StatusConstant;
import com.sky.dto.DishDTO;
import com.sky.dto.DishPageQueryDTO;
import com.sky.entity.Dish;
import com.sky.result.PageResult;
import com.sky.result.Result;
import com.sky.service.DishService;
import com.sky.vo.DishVO;
import io.swagger.annotations.Api;
import io.swagger.annotations.ApiOperation;
import lombok.extern.slf4j.Slf4j;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.data.redis.core.RedisHash;
import org.springframework.data.redis.core.RedisTemplate;
import org.springframework.web.bind.annotation.*;

import java.util.List;

@RestController("userDishController")
@RequestMapping("/user/dish")
@Slf4j
@Api(tags = "c端菜品相关接口")
public class DishController {



    @Autowired
    private DishService dishService;

    @Autowired
    private RedisTemplate redisTemplate;


    /**
     * 根据分类id查询菜品
     * @param categoryId
     * @return
     */
    @GetMapping("/list")
    @ApiOperation("根据分类id查询菜品")
    public Result<List<DishVO>> list(Long categoryId){
        //构建redis的key
        String key = "dish_" + categoryId;
        // 判断redis中是否存在
        List<DishVO> dishVOList = (List<DishVO>)redisTemplate.opsForValue().get(key);
        if (dishVOList != null && dishVOList.size() > 0){
            // 如果存在，直接返回
            return Result.success(dishVOList);
        }

        log.info("根据分类id查询菜品：{}", categoryId);
        Dish dish = new Dish();
        dish.setCategoryId(categoryId);
        dish.setStatus(StatusConstant.ENABLE);

        // 如果不存在，查询mysql，然后放入redis
        dishVOList = dishService.listVO(dish);
        redisTemplate.opsForValue().set(key, dishVOList);

        return Result.success(dishVOList);
    }

}
